Several additional wells were drilled in the caldera after 1983 to the east and north of Highway 395.

Notes

Among these wells were exploration and monitoring wells drilled near the Fish Hatchery Springs in preparation for the siting of a second binary geothermal power plant, which included the CW-2 and the MPLP CW-3 (a.k.a. Chance 3) wells along the northern edge of the Chance Meadow. These two wells are located within 30 m of a significant thermal spring denoted as the Hot Bubbling Pool. The two wells exhibited temperature profiles similar to that encountered in the upper 300 m of (Unocal) Mammoth-1, with maximum temperatures of 132°C encountered in CW-2.